Broadcasting system

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

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Details

358 84, 380 14, 455 2, 455 12, H04N 7167, H04N 700

Patent

active

047517328

ABSTRACT:
Broadcasting stations send programs to subscribers via satellite scrambled signals. A subscriber inserts an IC card into a meter rate charging decoder to view/listen chargeable programs. Program codes are written in the IC card to determine fees to be paid to each station.

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"The Memory Card its Possible Use to Pay TV Satellite Broadcasting", Q. A. Hoang (CII Honeywell Bull) May 31, 1983, pp. 1-10.

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